Proper Case Conversion

Hello, I'm reading data from a mysql table that is entirely in uppercase letters. I'd very much like to convert them to lowercase. After searching a while, I found that there is are php commands to convert text strings between upper and lower case, but I was unable to find anything that can convert to proper case. Does any one know of a way to do this, or a script that will accomplish it? Or, is there a mysql command that can handle the matter for me? Thanks, Keith